ABB OVB-SDB, Инструкция по эксплуатации

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4.7 High voltage connection
The high voltage connection fasteners shall be preferable of M12 size stainless
steel bolts/galvanized bolt and nut and at least one washer and 1 spring washer.
Terminal connectors (Aa - Fig.2 & 3, page no51 & 52) should be properly cleaned
using stainless steel wire brush to remove the aluminum oxide film and
conducting grease to be applied.
The cable terminals shall be connected in such a fashion that clearances are
maintained properly.
4.8 Low voltage connections
The Auxiliary circuit connections shall be checked as per relevant schematic
diagram for correctness (See Fig 5, page no.54 for typical schematics).
A removable gland plate is provided in the bottom of the control cabinet which
can be suitably drilled as per control cable glands.
4.9 Earthing
Earthing connection should be made as shown in GA drawing (Fig. 2 & 3, page
no.51 & 52). All earthing joints should be securely bolted together. Connections
to the station earthing should have a cross section, not less then that of
the earth connection pad welded on the structure.